package filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import dto.UserDTO;

public class LoginFilter implements Filter {

	public void destroy() {

	}

	public void doFilter(ServletRequest arg0, ServletResponse arg1,
			FilterChain arg2) throws IOException, ServletException {
		HttpServletRequest request=(HttpServletRequest) arg0;
		HttpServletResponse response=(HttpServletResponse) arg1;
		String url=request.getRequestURI().toString();
		if(url.endsWith("/")){
			arg2.doFilter(request, response);
		}else{
			if(url.indexOf("login.jsp")!=-1||url.indexOf("DoLoginServlet")!=-1||url.indexOf(".jpg")!=-1||
			   url.indexOf("register.jsp")!=-1||url.indexOf("doRegisterServlet")!=-1||url.indexOf("superLogin.jsp")!=-1
			   ||url.indexOf("show.jsp")!=-1||url.indexOf("doSuperLoginServlet")!=-1){
				arg2.doFilter(request, response);
			}else{
				UserDTO udto=(UserDTO) request.getSession().getAttribute("USER") ;
				if(null==udto){
				    response.sendRedirect("login.jsp");
				}else{
					arg2.doFilter(request, response);
				}
			}
		}
	}
	
	public void init(FilterConfig arg0) throws ServletException {

	}
}
